# Reference The pages in this section contain technical information for topics relevant to the DNS operators. * [Components](https://canonical.com/juju/docs/dns-charms/latest/reference/components/index.html.md) * [Bind charm architecture](https://canonical.com/juju/docs/dns-charms/latest/reference/bind-charm-architecture/index.html.md) * [DNS policy charm architecture](https://canonical.com/juju/docs/dns-charms/latest/reference/dns-policy-charm-architecture/index.html.md)